2003
DOI: 10.1071/fp02115
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Partial rootzone drying: regulation of stomatal aperture and carbon assimilation in field-grown grapevines (Vitis vinifera cv. Moscatel)

Abstract: Abstract. The effects of 'partial rootzone drying' (PRD) irrigation compared with other irrigation systems, namely non-irrigated (NI), full irrigation (FI) and deficit irrigation (DI), on stomatal conductance and carbon assimilation were evaluated in field-grown grapevines (Vitis vinifera L. cv. Moscatel). At the end of the growing season, pre-dawn leaf water potential was highest in FI (-0.18 ± 0.01 MPa; mean ± s.e.), intermediate in PRD (-0.30 ± 0.01 MPa) and DI (-0.36 ± 0.02 MPa), and lowest in NI vines (-0… Show more

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Cited by 159 publications
(96 citation statements)
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“…Although we did not measure ABA content, we can hypothesise that faster growing trees on the more vigorous rootstock may have experienced more severe deficit (greater ABA accumulation) during the irrigation period, causing a delay for g s resumption. Similar reductions of g s were reported in potted apples (Gowing et al 1990), in olive (Wahbi et al 2005), and in grapes (Dry and Loveys 1999;De Souza et al 2003). Other studies conducted on field-grown apple trees reported inconsistent g s reductions in response to PRD (Einhorn and Caspari 2004;Lombardini et al 2004;van Hooijdonk et al 2004).…”
Section: Canopysupporting
confidence: 64%
“…Although we did not measure ABA content, we can hypothesise that faster growing trees on the more vigorous rootstock may have experienced more severe deficit (greater ABA accumulation) during the irrigation period, causing a delay for g s resumption. Similar reductions of g s were reported in potted apples (Gowing et al 1990), in olive (Wahbi et al 2005), and in grapes (Dry and Loveys 1999;De Souza et al 2003). Other studies conducted on field-grown apple trees reported inconsistent g s reductions in response to PRD (Einhorn and Caspari 2004;Lombardini et al 2004;van Hooijdonk et al 2004).…”
Section: Canopysupporting
confidence: 64%
“…Permanent photoinhibition in grapevines was shown to be rare under drought Maroco et al, 2002;de Souza et al, 2003).…”
Section: Discussionmentioning
confidence: 99%
“…In previous studies, we have shown in cultivar Moscatel that leaf stomatal conductance, when measured under field conditions, but controlling CO 2 , light and temperature in the leaf cuvette, was more reduced under PRD than in an irrigation treatment where the same amount of water was given to both sides of the root system (DI). However, in seasonal and diurnal courses of instantaneous measurements no large differences could be detected (de Souza et al, 2003), implying that the regulation is very subtle.…”
Section: Introductionmentioning
confidence: 98%
“…Photosynthesis in grapevines has been demonstrated to be quite resilient to water stress Flexas et al 2002;De Souza et al 2003;Tomás et al 2013) and dependent on the diffusion pathways of CO 2 Tomás et al 2013Tomás et al , 2014a. Under mild water stress, as photosynthesis is moderately by stomatal closure or mesophyll conductance, an improved WUE i is generally reported.…”
Section: Effects On Plant Physiologymentioning
confidence: 98%
“…Moreover, WUE i could not be an appropriate proxy for the real plant water use efficiency, since this value does not describe the whole canopy behavior of g s during the whole day and at the whole plant level. There is the need to use more integrated measurements as stable carbon isotope composition (δ 13 C) De Souza et al 2003, 2005Romero et al 2014;Santesteban et al 2011). In general, differences between irrigation strategies have been found when the amount of water applied was different Santesteban et al 2011).…”
Section: Effects On Plant Physiologymentioning
confidence: 99%